Code The Went Away ?

[Smitty00Z71]

I had a code on my 2002 Silverado related to the knock sensor , the code has been around for about a month but the truck as continued to run just fine. Anyway, today I went on a long run in the truck - about 200 miles round trip - and the code went away. I guess this is a good thing and I should assume the problem fixed itself?

[Draenor]

It could of. Probably some bad gas. Been buying gas at the same place?

[Smitty00Z71]

no, I buy gas at different places. But i sware the code came up after I ran some Chevron Technoline fuel injector cleaner , not sure it that casue it.... I have since burned all that gas....now the check engine light is gone.